Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	7817	1114	14%	0.00	1482	736	50%	6.9
10 Kinds of People	16183	3349	21%	0.01	2758	1979	72%	3.9
2048	7470	3473	46%	0.00	3376	2880	85%	2.3
3D Printed Statues	8592	3953	46%	0.00	3665	3285	90%	2.0
3D Printer	688	127	18%	0.00	265	97	37%	8.6
3-Sided Dice	2168	190	9%	0.00	355	131	37%	8.6
4 thought	7593	2562	34%	0.00	2563	2139	83%	2.6
A1 Paper	4857	1431	29%	0.00	1414	1128	80%	3.4
Aaah!	26026	12087	46%	0.00	10842	10095	93%	1.6
Abandoned Animal	1545	338	22%	0.03	409	293	72%	5.3
ABC	11595	5235	45%	0.00	5006	4547	91%	1.8
Ab Initio	856	168	20%	0.09	124	79	64%	7.4
Above Average	7226	3018	42%	0.00	2986	2680	90%	2.0
A+B Problem	7188	699	10%	0.03	1034	339	33%	8.4
A Brief Gerrymander	201	45	22%	0.15	49	30	61%	8.4
Abstract Art	262	79	30%	0.00	80	60	75%	6.6
Absurdistan Roads II	547	197	36%	0.00	195	133	68%	6.8
Absurdistan Roads III	1368	384	28%	0.02	374	288	77%	5.5
Access Points	359	135	38%	0.01	124	98	79%	4.6
A Classy Problem	8538	2166	25%	0.01	1900	1458	77%	4.6
ACM Contest Scoring	6116	3828	63%	0.00	3389	3195	94%	1.6
Add 'Em Up!	338	111	33%	0.01	110	84	76%	5.0
Adding Words	9294	2192	24%	0.00	2151	1655	77%	3.6
A Different List Game	6577	460	7%	0.00	818	162	20%	9.2
A Different Problem	27743	10328	37%	0.00	9535	8277	87%	2.2
Adjoin the Networks	1834	487	27%	0.00	437	342	78%	5.7
Administrative Difficulties	1060	241	23%	0.03	257	175	68%	6.2
Advanced Causal Measurements	57	18	32%	0.10	22	18	82%	6.2
Adventure Begins	241	78	32%	0.06	83	64	77%	4.0
Adventures in Moving -- Part IV	930	267	29%	0.00	234	200	85%	4.5
A Favourable Ending	1483	385	26%	0.00	361	273	76%	4.7
A Feast For Cats	1913	679	35%	0.00	453	382	84%	4.2
A Flea on a Chessboard	386	82	21%	0.01	92	67	73%	4.8
Air Conditioned Minions	4685	1283	27%	0.00	1355	1016	75%	3.9
Airline Hub	1744	323	19%	0.01	351	198	56%	6.7
Airport Coffee	814	175	21%	0.09	168	120	71%	7.2
Airport Construction	3275	420	13%	0.02	341	182	53%	7.4
Airport Logistics	56	13	23%	0.00	19	13	68%	7.5
Airports	385	109	28%	0.11	114	81	71%	6.8
Akcija	6618	2928	44%	0.00	2671	2366	89%	2.1
Aladin	751	76	10%	0.10	121	29	24%	8.2
Alchemy	108	16	15%	0.02	30	16	53%	8.9
Alea iacta est	32	13	41%	0.34	17	13	76%	6.9
Alehouse	152	62	41%	0.03	49	36	73%	4.9
Alice in the Digital World	3066	824	27%	0.01	794	627	79%	3.9
Alien Codebreaking	225	11	5%	3.23	34	8	24%	9.1
Alien Numbers	2114	1095	52%	0.00	1066	968	91%	2.0
A List Game	7591	2251	30%	0.00	2121	1784	84%	2.9
All about that base	2691	1055	39%	0.00	1032	864	84%	3.0
All Different Directions	1146	491	43%	0.00	463	404	87%	2.6
Allergy Test	446	127	28%	0.00	144	74	51%	7.8
All Friends	843	165	20%	0.00	151	79	52%	8.9
All is Well	50	13	26%	0.03	13	11	85%	5.7
All Just A Dream	1731	392	23%	0.05	277	193	70%	6.6
All Pairs Shortest Path	8146	1449	18%	0.02	995	700	70%	6.0
Almost Perfect	6912	1599	23%	0.00	1712	1328	78%	3.7
Almost Union-Find	5996	1065	18%	0.02	960	553	58%	6.7
Alphabet	1368	675	49%	0.00	688	581	84%	3.0
Alphabet Animals	1578	490	31%	0.00	502	400	80%	3.2
Alphabet Spam	7361	4601	63%	0.00	3732	3588	96%	1.3
Alternative Bracket Notation	204	85	42%	0.00	91	75	82%	5.3
Altruistic Amphibians	373	95	25%	0.24	93	67	72%	5.1
Amalgamated Artichokes	3660	1644	45%	0.01	1486	1292	87%	2.8
Amanda Lounges	1386	389	28%	0.03	364	285	78%	5.6
A Mazing!	2454	531	22%	0.09	260	196	75%	5.2
Amazing Adventures	325	84	26%	0.02	96	66	69%	5.8
Amazing Race	281	75	27%	0.39	85	60	71%	7.2
Ambiguous Result	263	56	21%	0.02	86	53	62%	8.2
Amsterdam Distance	1294	568	44%	0.00	615	504	82%	2.9
A Multiplication Game	702	226	32%	0.00	257	189	74%	4.9
Anagram Counting	3272	1255	38%	0.00	1220	1013	83%	3.1
Andrew the Ant	253	72	28%	0.06	82	62	76%	5.1
A New Adventure	752	123	16%	0.01	139	93	67%	6.0
A New Alphabet	10217	4561	45%	0.00	4247	3921	92%	1.8
An I for an Eye	592	136	23%	0.00	160	110	69%	5.2
Animal Classification	1549	353	23%	0.03	303	201	66%	6.7
An Industrial Spy	1458	767	53%	0.02	605	518	86%	3.3
Another Brick in the Wall	2993	1470	49%	0.00	1416	1296	92%	1.9
Another Candies	7187	1955	27%	0.00	2046	1686	82%	2.7
Another Dice Game	91	64	70%	0.00	59	53	90%	4.0
Another Query on Array Problem	1481	209	14%	0.05	324	146	45%	7.5
Antenna Placement	127	58	46%	0.00	42	34	81%	5.4
Anthony and Cora	849	215	25%	0.00	257	179	70%	5.4
Anthony and Diablo	2767	950	34%	0.00	953	819	86%	2.6
Antiarithmetic?	1267	236	19%	0.01	301	174	58%	7.1
Ants	3286	1445	44%	0.00	1168	1018	87%	2.7
Apaxiaaaaaaaaaaaans!	11913	7270	61%	0.00	6434	6163	96%	1.4
Apostrophe Catastrophe	99	24	24%	0.00	25	17	68%	6.5
Appalling Architecture	512	148	29%	0.00	133	113	85%	3.7
Apparatus	682	169	25%	0.01	136	102	75%	5.7
Apple Market	461	93	20%	0.07	113	58	51%	8.3
Apples, Cherries, and Mangos	406	123	30%	0.02	126	91	72%	6.4
A Prize No One Can Win	1779	717	40%	0.00	668	588	88%	2.4
Aquarium Tank	470	130	28%	0.00	125	98	78%	5.2
Aqueduct Construction	196	71	36%	0.01	55	47	85%	6.8
A Question of Ingestion	1236	305	25%	0.00	290	222	77%	5.8
Arable Area	293	65	22%	0.04	66	42	64%	8.1
Arachnophobia	327	99	30%	0.14	88	74	84%	5.1
A Random Problem	313	80	26%	0.00	77	53	69%	6.3
A Rational Sequence	1676	557	33%	0.00	582	429	74%	4.5